Improvement in machinery for pumping, forcing, and blowing



' 2 Sheets--SheetL` R. JOHl-SVO-N. l Machinery for.Pumping`;, Forcing, andfBloWing.`

Patented M.ar'.,4, 1879.

NPETERS. PHOTD-LHHCGRAPHER. WASHINGTON, D C,

2 Sheets-Sheet 2.

. )IIL P-atented Mair. 4, 1879.

N. PETERS, FHOTG-LITNOGRAPHER. WASHINGlN4 D C.

ROBERT JOHNSON, OF SEEDLEY,

FFIGE.

NEAR MANCHESTER, ENGLAND.

IMPROVEMENT IN MACHINERY FOR PUMPING, FORCING, AND BLOWING.

Specification forming part of Letters Patent No. 212,944, dated March 4, 1879 application lcd December 10, 1878.

To all whom it may concern:

Be it known that I, ROBERT JOHNSON, of Seedley, near Manchester, in the county of Lancaster, in England, engineer, have invented certain new and useful Improvements in Machinery for Pumping, Forcing, Blowing, and Exhausting Air and other iiuids, and for obtaining motive power; and I hereby declare the following to be a full, clear, and exact description thereof, reference being had to the annexed drawings, forming part of this specification.

My improved machinery consists of a cylinder, with covers at each end supporting a central axle. Vithin this cylinder are segmental divisions extending from the inside circumference to the axle, to which is xed a double blade. At the outside of the axle is xed a crank, which is connected to the pistonrod of a steam-cylinder or other motor by a' connecting-rod; or when the Ymachine is used as a motor, the axle is connected to the drivin g-gear. Openings are provided on each side of the segmental divisions for admitting and discharging the air or other fluid, such openings being regulated by means of circular valves placed within the said segmental divisions; consequently every to-and-fro motion of the steam-piston or other motor draws in and forces out a certain quantity of air, water, or other iiuid; or when used as a motor, the ilnid imparts motion to the double blade c, and from it to the driving-gear. 4

Figure 1 is a longitudinal section of my improved machinery for pumping, forcing, blowing, and exhausting air and other fluids. Fig. 2 is a transverse section of the same.

a is the cylinder; b, the covers for the ends of the cylinder a. In each cover is a bearing supporting the central axle d, to which is xed a double blade, c. Within the cylinder a are segmental divisions or abutments e, extending from the inside circumference 0f the cylinder to near the axle d, and a wood or other packing, e', is inserted in the divisions e to form the joint. In the divisions c are placed cylindrical valves f, open at each end, one for the outlet and the other for the inlet of the air or other iinid, which openings are separated by means of a diagonal division, f2.

The valves fare fixed on the spindles f3, on the ends of which are spur-wheels h. On the axle d is fixed the crank a3, which is connected with the piston-rod g2 of the steam-cylinder g, or other motor, by the connecting-rod g1. The connecting-rod g3, also connected to the crosshead of the piston-rod g2, is connected to the crank-pin l on the spur-wheel t', which is fixed to the axle i2, on which is the iy-whcel t4. The spur-wheel 'i gears into both the wheels h h.

The drawings represent the parts in the positions they occupy when the piston in the steam-cylinder g or other motor is moving in the direction of the arrow in Fig. 1, and consequently when the double blade c is approaching the segmental division e. At this time lthe valves f are partly open to admit the iiuid into the cylinder a at one side of the abutment, and discharge it at the other side. When the pistonin the steam-cylinder arrives at the end of the stroke the double blade c will be close to the division e. At this point the valves have closed the openings on each side of the abutments; but when the steam-piston commences its return stroke in the cylinder, the valves, in consequence of the rotary motion given them by the wheels i and h, again open to admit and discharge the air or other iiuid.

By this means every to-and-fro motion of the steam-piston or other motor imparts an oscillating or reciprocating motion to the double blade c and a rotary motion to the valves f, and twice in each to-and-fro motion draws in and forces out a quantity of air, wa ter, or other iiuid equal in capacity to the space between the segmental divisions e minus the thickness of the doubleblade c.

When the machine is used as a motor, the air, water, or other iuid is admitted through the valves f onto the double blade c, and discharged from the cylinder when the double blade reverses its direction of motion.

Having thus stated the nature of my invention and described a convenient manner of performing the same, I do not ola-im, broadly, the combination of an oscillating blade with alternately opening and closing valves; but

l. The combination of the blade c and the cylindrical valves f f, arranged Within the cylinder parallel toits axis, and the abutments e e, in which said valves are located, the blade and valves havin g respectively oscillating and rotary motion by connecting gearing, substantially as specied.

2. An oscillating' cylindrical valve, j', having the diagonal division f2, in combination with a case, A, and apcrtured abutment e, substantially as specied.

3. The combination, with the blade c and valves f f2, of the crank d3, gears h h i, the connecting` rods g1 g3, and piston g2, all as shown and described, whereby oscillating motion is imparted to the blade and rotary motion to the valves, as and for the purpose specied.

In testimony whereof I have hereto set my hand before two subscribing` witnesses.

ROB. JOHNSON. Witnesses:

CHARLES J. MORRIS, TOM PITTS. 

